ALICE3: TRK now hosts IRIS tracker which is divided into petal cases and made retractable

[Cas1997]

The TRK now hosts the vacuum in TRKServices, as well as the disks and layers of the iris tracker. The Iris tracker is now split in four individual petal cases and radial walls are added to separate these petal cases.
Additionally, the IRIS tracker can now be used in the state when beams are injected (so in the open state). This is done with --configKeyValues TRKBase.irisOpen=true

[github-actions]

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[alibuild]

Error while checking build/O2/fullCI_slc9 for 674a93e at 2025-02-11 13:28:

## sw/BUILD/O2-latest/log
CMake Error at cmake/AddRootDictionary.cmake:75 (message):

Full log here.

[alibuild]

Error while checking build/O2/fullCI for 674a93e at 2025-02-11 14:31:

## sw/BUILD/O2-latest/log
c++: error: unrecognized command-line option '--rtlib=compiler-rt'
c++: error: unrecognized command-line option '--rtlib=compiler-rt'
CMake Error at cmake/AddRootDictionary.cmake:75 (message):

Full log here.

[maireiphc]

Hello Cas,

I have attended your presentation this morning at the ALICE3 days 2025-02 (https://indico.cern.ch/event/1488533/contributions/6324326/).
My sense of geometry in space is not reliable, so watch after me... but I have been wondering about the orientation of your IRIS configuration in open mode.
Is the parking position and orientation of your IRIS quarters double-checked (it is a matter mass rotation I suppose) ?

Depending on i) the parking location and ii) how it is seen from the FCT side (A side), you may suffer less or more from secondaries hitting the FCT acceptance
(Podist for the forward detector showed today that Nch in FD that there is vertical band with Nch excess, i.e. I suspect in connection with the major mechanical gap that exist along the vertical meridian separating all ALICE3 left-right hemispheres. You may be vulnerable to similar issues for FCT ?)